CRUSADE Bleeding Score: Estimates in-hospital major bleeding risk in NSTEMI/UA. Endorsed by ACC/AHA guidelines.
Female Sex
Signs of CHF at presentation
Prior Vascular Disease
Diabetes Mellitus
Guidelines & Evidence
Clinical Details
Section 1
When to Use
When to Use
Patients presenting with Non-ST-Elevation Myocardial Infarction (NSTEMI) or Unstable Angina (UA)
To stratify the risk of major, in-hospital bleeding prior to initiating antithrombotic therapy and making decisions regarding invasive management
Do Not Use If
Not primarily validated for STEMI patients or for outpatients. The score is specifically for in-hospital bleeding in the NSTEMI/UA population.
Section 2
Formula & Logic
Scoring Logic
The CRUSADE score is a weighted algorithm using 8 baseline variables (4 continuous, 4 categorical) routinely collected at presentation. Points are assigned non-linearly based on the independent predictive power of each variable for major bleeding.
Heart Rate (bpm): Tachycardia correlates with worse outcomes.
04
Systolic BP (mmHg): Both extremes (≤90 and ≥201) carry points.
05
Female Sex: Carries 8 points.
06
Signs of CHF at presentation: Carries 7 points.
07
Prior Vascular disease and Diabetes mellitus: Carry 6 points each.
Risk Categories
01
≤20: Very Low Risk (3.1%)
02
21-30: Low Risk (5.5%)
03
31-40: Moderate Risk (8.6%)
04
41-50: High Risk (11.9%)
05
>50: Very High Risk (19.5%)
Section 3
Pearls/Pitfalls
Interpretation in Practice
A high CRUSADE score should NOT automatically preclude a patient from receiving life-saving evidence-based therapies (e.g., dual antiplatelet therapy, anticoagulation, early invasive strategy) if they are also at high ischemic risk (e.g., by GRACE score). Instead, the score should prompt careful dosing, vigilance, and strategies to mitigate bleeding.
Mitigating Strategies
Dose adjustment of antithrombotics based on renal function and weight
Choice of anticoagulation (e.g., preferring fondaparinux or bivalirudin over unfractionated heparin in certain settings depending on local protocols)
Preferential use of radial rather than femoral arterial access for angiography/PCI
Routine use of proton-pump inhibitors (PPIs) in patients at high risk of GI bleed
Section 4
Evidence Appraisal
Derivation Study
Baseline risk of major bleeding in non-ST-segment-elevation myocardial infarction: the CRUSADE (Can Rapid risk stratification of Unstable angina patients Suppress ADverse outcomes with Early implementation of the ACC/AHA Guidelines) Bleeding Score.
Subherwal S et al. • Circulation.. 2009;119(14):1873-1882. Derived from a large registry of 71,277 patients.
